Here is what i was told by my inssurance company 1 year ago when i was hospitolized for 8 months. Well they told me to sign up for classes show the reciet to the inssurance company that you are a full time student. Therefore they will list him under his parents inssurance again. Then after a month get the classes dropped. There fore you pay for college which is anywhere from 2,000-5,00 per semester, i reccomend sigining at a community college for this. Then remove himself from college so the classes aren't held against him nad he will get a W for a grade. There for he is listed as full time. Then again for the following semester do this process. And he will be covered. Issurenace company has to entitle you, for full covereage even if you attempted college and failed out. Its better than paying 50,000 and more to get taken care of.
I am sorry i cannot not make this trip. May god watch over him. For a child should not go threw the agony of cancer this young. My deepest apologies.